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M. E. REISERT.

AUTOMATIC GRAIN SCALE.

No. 376,679. Patented Jan. 17, 1888.

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AUTOMATIC GRAIN SCALE. No. 376,679. Patented Jan. 17, '1888.

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M. E. REISERT. AUTOMATIC GRAIN SCALE.

No. 376,679. Patented Jan. 17, 1888.

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AUTOMATIC GRAIN SCALE.

No. 376,679. Patented Jan. 17, 1888.

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Patented Jan; 17, 1888.

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AUTOMATIC GRAIN SCALE. v No 376,679. Patented Jan. 17, 1888.

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AUTOMATIC GRAIN SGALE.

Patented Jan. 17, 1888.

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UNITED STATES PATENT OFFICE.

MICHAEL :EDUARD Rmsnn'r, or HENNEF, GERMANY, ASSIGNOR TO HEN" NEFER MASOHINENFABRIK O. REUTHER 8v REISERT, OF SAME PLACE.

AUTOMATIC GRAIN-SCALE- SPECIFICATION forming part of Letters Patent No. 376,679, dated January 1'7, 1888.

Application filed May 26, 1856. Renewed May 3, 1881'. Serial No. 236,970. (No model.)

jthescale-beam; third, tosecure the working of the balance; fourth, to prevent all fraudulent influences from outside; and, fifth, to provide means for a regular supply of material during the last equipoise moments. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a side elevation of the weighing apparatus during the balancing period. Fig. -2is aside elevation, partly in section, just after the balancing is reached. Fig. 3 shows the essential parts of the mechanism at the beginning of the weighing period, and Fig. 4 shows the same parts when the proper working of the apparatus is controlled. Figs. 5, 6, 7, 8, 9, and 10 illustrate modifications of the weighing mechanisms, and Figs. '11 and 12 are en- 'larged sections of the device for securing a proper supply during the last moments of balancing. Fig. 13 is a plan View of a portion of the flap F.

Similar letters refer to similar partsthroughout the several views.

The balance is provided with a common scale-beam, A, which can equilibrate when the scales are empty as well as if charged. The two flaps F and G close the supply-fun- 1161. The flap F serves to reduce the supply of the material to be weighed to fine rays, which enter through slits provided in the flap into the'receptacle B before the latter is entirely filled with the quantity balancing the weight placed upon the weight-scale. The other flap, G, closes entirely the supply-funnel as soon as the beam is in the state of equilibrium. This second flap, G, serves for a double purpose viz., it has to effect the entire closing of the supply-funnel, and it has to cause the emptying of the receptacle B after the supply has discontinued.

The flap Gv is attached to a three-armed lever, 6 e a pivoted at e. The arm e of the latter is provided with a counter-weight, S, which bears normally against a stop, 00.

H is a link which rests upon theknife-cdge z, projecting from the arm e. The lower end of this link may be connected to the bearingrod d of the receptacle B, as shown in Fig. 1; or it may be connected to a lever, I, which oscillates with thebalances, as shown in Fig. 2.

\Vhen the flap G is open, the weight S lies to the left of the pivot e and bears against the stop 00.

N is a link suspended from the arm a to permit the emptying of the receptacle by raising the pin 0 and hook O when the supply-funnel is entirely closed.

Jis alever pivoted on knife-edge'sj, and provided with the adjustable counter-weight U. This lever has a knife-edge, 2', which presses upon a projection, b, on the rod 1) and causes,

conjointly with the flap G, the premature closing of the supply-funnel.

The receptacle B is provided with a projection, g, which presses upon a roller, r, connected to the flap F, and opens and closes the flap when the receptacle, which turns on its axis d, is tilted. The axis (2 of the receptacle is not placed directly beneath the center of gravity of the loaded receptacle, but a very little to one side, just sufficient to cause the receptacle to tilt of its own accord whenloaded and not held by the hook and pin.

The knife-edge 1 always rests upon the projection b,- but, if desired, it can be raised clear of the projection by turning the crank Uinto the position shown in Fig. 4 and allowing the The flap G is also open and the ico Fig. 1. The continued downward motion of the receptacle and link H, due to the material passing through the slits in the flap F, causes the said link to press on the knife-edges z and pull down the arm 0. This moves the weight S from thestop so until it is over the center of the pivot e. The weight then falls suddenly into the position shown in Fig. 2. The flap G closes the hopper, and the link N lifts up the pin 0 and hook 0 clear of the catch 70 and allows the receptacle to fall over and empty itself.

V is a counter-weight for restoring the empty receptacle to its upright position. The

projection q bears on the roller r and opens the flap F, and a pin, 8, which projects from the side of said flap, presses upon the arm 0 and opens the flap G until the weight lpasses over the center of the pivot e. The weight then falls against the stop 00, holds the flap G wide open, and allows the hook O to engage withthe catch k".

During the first part of the filling of the re ceptacle the lever J bears with all its weight upon the projection b, and is then unbalanced by weight S, since the receptacle has not yet fallen at all and brought the'link H into contact with the knife-edge z. During the last part of the filling, after the receptacle has sunk slightly,bringing the link H into contact with the knife-edge z, the weighted lever J balances not only the upward pressure of the knifeedge 2, due to the weight S, until the said weight, in moving from the stop, has passed over the center of the pivot 6, but it overcharges also the scale-beam, so that it gets into motion and causes the closing of the supplyfunnel so much earlier, as would be required to balance the material stillfalling into the receptacle B after the scale-beam equipoises.

The weight of lever J then comes upon the receptacle and causes it to overbalance quickly. The same effect would also be produced by the lever J, as shown in Fig. 3, which is applied to raise the ascending scale instead of to depress the descending receptacle.

The counter-weight U may be moved back and forth upon the lever J, so that the receptacle may tilt over at the exact moment it is filled with a certain weight of material. The hook O is supplemented by an additional hook, O, which forms an extension of it. This book 0 will engage with the catch k should the receptacle tilt over too soon or not turn back far enough for the hook O to engage with the said catch. The parts are so proportioned thatthe catch it passes the hook 0 before either of the flaps is opened. The pin .9 also prevents the flap Gfrom closing and the receptacle from tilting over if any obstruction should cause the flap F to stick and not operate properly.

Figs. 5, 6, 7, and 8 show a device which may be used instead of the weight S to close the flap G and tilt over the receptacle. The flap G is here supported by the weight 1), which operates through the toggles L M 1?, and also causes the link M P of the toggle to bear against the pin m, which projects from an arm on lever J. lhis pin m limits the further motion of the toggle in its direction. The projection q may also be replaced by the projection q on the side of the receptacle, and for the roller 9' may be substituted the lever 1t, pivoted at e, and which, by pressing on the pin 8, operates in connection with the projection q in exactly the same manner as the roller 1* operated with the projection q, and the flap F is opened and closed, as before described. When the projection q descends clear of lever B, the toggle is thrown over, as shown in Fig. 7, as soon as it passes its straight position. This is accomplished by its own weight, the weight of the flap G, and other parts connected thereto. The lever J also assists in bending the toggle by means of the pin m, which presses on the link M P.

H is a weight on the end of lever J. This weight rests upon the pin it when the receptacle tilts over.

In Fig. 9 is shown a modification in the mechanism for operating the toggle. A finger, Z, projects from the toggle at M and bears upon a stop, 0, on the side of the receptacle. Then the receptacle descends far enougl1,tl1e stop leaves the finger and allows the toggle to bend in the direction in which it is already inolined, and the flap G closes by its own weight. According to another but less advantageous method, the flap G may close by its own weight, as shown in Fig. 10.

Wis a pivoted catch which holds the flap G open until the downward movement of the end of. lever J presses on the striker end of the catch and relieves the said flap. The catch may also be arranged as shown in dotted lines in Fig. 10 and lettered W. The striker end of the catch is here operated by the supporting-link of the receptacle, and engages with a projection extending from the pivoted supporting-arm of the flap G.

Z is a counter, which indicates the number of discharges made by the receptacle.

The apparatus may be boxed in and, if desired, provided with a feeding mechanism, such as the conveyer D or the roller D.

Figs. 11 and 12 show a device for preventing the delivery of a light charge to the receptacle when the supply in the hopper is so diminished as not to fill theslits in the flap F. This device consists of a reservoir, E, formed in the hopper, and a third flap, M. The reservoir E retains a supply of material, which it delivers after the closing of flap F, which is supplied from the division E", which is separated from the reservoir E by the partition E.

L is a link which connects the flaps F and M, so thatthe flapM opens when the flap F closes. If, therefore, the supply to flap F should be too little, it will be supplemented by that from reservoir E, which always retains a stock ready for delivery. The flap G is independent of this device. As soon as the flap F is opened again, the flap M closes automatieally. A stop, 15, limits the motion of the scale-beam.

Several features have been described and illustrated in the present case which are claimed or covered in a separate pending application of mine, and numbered 222,999, filed December 30, 1886, to which application at tention is directed. The notable features of similarity are the tilting scale-beams and receptacles and the flaps F and G and devices for controlling thesame.

I claim 1. In an automatic weighing-scale, the combination of a receptacle, the rod b, with projection b, upon whichpresses the knife-edge '5 of the lever J, provided wit-h an adjustable Weight, the supply -fiap G, with counter-weight S, mounted on pivot e, the knife-edge z, and a link connecting rod 1) and thesaid knifeedge, arranged and operating substantially as and for the purpose hereinbefore specified.

2. In an automatic weighing-scale,the combination of a receptacle, the lever J, provided with an adjustable weight, the supply-flap G,

p with the counter-weight S, mounted on pivot operating substantially as and for the purpose set forth.

3. In an automatic weighing-scale, the combination of the three-armed lever e 6 0 mounted on pivot e, the flap G, secured to arm 6, the weight S on arm a, the knife-edge z, a tilting receptacle provided with the catch k, a pivoted hook engaging with the catch, the link N, pivoted to arm 0 the lever J, provided with anadjustable weight, and the link H, connecting the lever J either directly or by means of the rod b with the knife-edge z, so that the said lever may he unbalanced by the Weight S until the descent of the receptacle causes the said weight to suddenly cut off the supply of material, raise the hook 0 clear of v the catch 7c, and allows the receptacle to fall over and empty itself.

4. In an automatic weighing-scale, the combination of a tilting receptacle provided with the projection q, the roller 1*, and the pin 8, attached to the flap F, the said projection operating to bear on the said roller, the said pin pressing upon the arm 6 of the flap G and opening both supply-flaps when the emptied receptacle is tilted up.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 22d day of March, 1886.

MICHAEL EDUARD REISERT,

\Vitnesses:

ALEXANDER Srnorrr, DIEDRIOH PETERSEN. 

